【題目】閱讀下面材料，在空白處填入適當(dāng)?shù)膬?nèi)容（1個單詞）或括號內(nèi)單詞的正確形式。

Floating mountains in the ocean are better known as icebergs (冰山). Icebergs are 【1】 (mass) of freshwater ice that have broken from a glacier (冰川) or polar ice sheet. Most icebergs are formed around Antarctica and Greenland.

Icebergs 【2】 (see) today began thousands and thousands of years ago. They began as flakes of snow falling on land. Over the years, more and more snow fell. The snow on 【3】bottom was crushed (壓碎) because snow on top was packing it down. Years of 【4】(melt) and freezing formed layers of ice thousands of feet thick. These sheets of ice are called glaciers. During the warmer weather in spring 【5】 summer, pieces of ice break off from glaciers. The broken pieces of ice fall into the water and become icebergs.

Icebergs vary 【6】 size. The largest iceberg ever recorded was the size of the state ofRhode Island in the United States. The 【7】 (tall) iceberg stood 550 feet above the ocean. That’s about the size of the Washington Monument in Washington, D. C.

Icebergs can be very 【8】 (danger) to ships traveling near them because only one-eighth of an iceberg 【9】 (be) above water. This means that the rock-hard ice is much larger underneath. Captains taking 【10】(they) ships around an iceberg may miscalculate the size of the iceberg.

【答案】

【1】masses

【2】seen

【3】the

【4】melting

【5】and

【6】in

【7】tallest

【8】dangerous

【9】is

【10】their

【解析】

本文為說明文。文章主要說明冰山的一些特點以及注意事項。

【1】 考查固定搭配。句意：冰山是冰川或極地冰蓋上破碎的大量淡水冰。masses of 為固定搭配，意為“許多的，大量的”，故填masses。

【2】考查過去分詞作定語。句意：今天看到的冰山始于數(shù)千年前。分析句子可知，空格處在句中作定語，因為Greenland Icebergs 和動詞see二者是被動關(guān)系，要用過去分詞作后置定語，故填seen。

【3】考查冠詞。句意：底部的雪被壓碎了。此處是特指底部的雪，要用定冠詞，故填the 。

【4】考查動詞的ing形式作賓語。句意：多年的融化和冰凍形成了數(shù)千英尺厚的冰層。分析可知，of為介詞，后面要用動詞的ing形式，故填melting 。

【5】考查語境及連詞。句意：在春天和夏天比較暖和的時候，冰川上的冰塊會脫落。句中的spring和summer二者是并列的，故填and。

【6】考查固定用法。句意：冰山大小不一。in size為固定搭配，意為“在大小上，尺寸上”。故填in 。

【7】考查最高級。句意：最高的冰山高出海洋550英尺。根據(jù)語境可知，此處是指最高級，可知要填tallest 。

【8】考查形容詞作表語。句意：冰山對于在它們附近航行的船只來說是非常危險的。分析句子可知，此處是形容詞做表語，故填dangerous 。

【9】考查謂語動詞。句意：因為只有八分之一的冰山露出水面。主語是one﹣eighthofaniceberg是單數(shù)。結(jié)合上下文使用一般現(xiàn)在時，故填is 。

【10】考查代詞。句意：船長駕駛他們的船繞過一座冰山可能會誤估冰山的大小。修飾名詞ships，要用形容詞性物主代詞，他們的船只，故填their。

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